java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memsetNonZero3_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:18:13,159 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:18:13,161 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:18:13,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:18:13,175 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:18:13,175 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:18:13,176 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:18:13,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:18:13,180 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:18:13,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:18:13,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:18:13,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:18:13,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:18:13,184 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:18:13,185 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:18:13,186 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:18:13,188 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:18:13,190 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:18:13,191 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:18:13,192 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:18:13,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:18:13,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:18:13,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:18:13,199 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 09:18:13,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:18:13,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:18:13,210 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:18:13,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:18:13,211 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:18:13,212 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:18:13,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:18:13,213 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:18:13,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:18:13,213 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:18:13,213 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 09:18:13,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 09:18:13,213 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 09:18:13,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:18:13,253 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:18:13,257 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:18:13,258 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:18:13,258 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:18:13,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memsetNonZero3_true-valid-memsafety_true-termination.c [2018-02-02 09:18:13,371 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:18:13,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:18:13,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:18:13,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:18:13,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:18:13,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9037be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13, skipping insertion in model container [2018-02-02 09:18:13,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,391 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:18:13,404 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:18:13,478 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:18:13,487 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:18:13,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13 WrapperNode [2018-02-02 09:18:13,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:18:13,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:18:13,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:18:13,491 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:18:13,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... [2018-02-02 09:18:13,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:18:13,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:18:13,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:18:13,514 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:18:13,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:18:13,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:18:13,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:18:13,563 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:18:13,563 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-02-02 09:18:13,564 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:18:13,564 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:18:13,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:18:13,625 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-02-02 09:18:13,661 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:18:13,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:18:13 BoogieIcfgContainer [2018-02-02 09:18:13,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:18:13,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:18:13,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:18:13,664 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:18:13,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:18:13" (1/3) ... [2018-02-02 09:18:13,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4466b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:18:13, skipping insertion in model container [2018-02-02 09:18:13,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:18:13" (2/3) ... [2018-02-02 09:18:13,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4466b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:18:13, skipping insertion in model container [2018-02-02 09:18:13,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:18:13" (3/3) ... [2018-02-02 09:18:13,667 INFO L107 eAbstractionObserver]: Analyzing ICFG memsetNonZero3_true-valid-memsafety_true-termination.c [2018-02-02 09:18:13,674 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:18:13,679 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-02 09:18:13,707 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:18:13,707 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:18:13,707 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 09:18:13,708 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 09:18:13,708 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:18:13,708 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:18:13,708 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:18:13,708 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:18:13,709 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:18:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-02-02 09:18:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 09:18:13,728 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:18:13,729 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:18:13,729 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 09:18:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793591, now seen corresponding path program 1 times [2018-02-02 09:18:13,735 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:18:13,736 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:18:13,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:13,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:13,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:13,823 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:18:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:13,885 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:18:13,885 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:18:13,886 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:18:13,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:18:13,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:18:13,897 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-02-02 09:18:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:18:13,953 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-02-02 09:18:13,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:18:13,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 09:18:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:18:13,960 INFO L225 Difference]: With dead ends: 22 [2018-02-02 09:18:13,961 INFO L226 Difference]: Without dead ends: 19 [2018-02-02 09:18:13,962 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:18:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-02-02 09:18:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-02-02 09:18:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-02-02 09:18:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-02-02 09:18:13,984 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2018-02-02 09:18:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:18:13,984 INFO L432 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-02-02 09:18:13,984 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:18:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-02-02 09:18:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 09:18:13,984 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:18:13,984 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:18:13,985 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 09:18:13,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793592, now seen corresponding path program 1 times [2018-02-02 09:18:13,985 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:18:13,985 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:18:13,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:13,986 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:13,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:14,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:18:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:14,099 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:18:14,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:18:14,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:18:14,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:18:14,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:18:14,101 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-02-02 09:18:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:18:14,118 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-02-02 09:18:14,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:18:14,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 09:18:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:18:14,119 INFO L225 Difference]: With dead ends: 18 [2018-02-02 09:18:14,119 INFO L226 Difference]: Without dead ends: 18 [2018-02-02 09:18:14,120 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:18:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-02-02 09:18:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-02-02 09:18:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-02-02 09:18:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-02-02 09:18:14,122 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-02-02 09:18:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:18:14,122 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-02-02 09:18:14,122 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:18:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-02-02 09:18:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:18:14,122 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:18:14,123 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:18:14,123 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 09:18:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash 577627260, now seen corresponding path program 1 times [2018-02-02 09:18:14,123 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:18:14,123 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:18:14,124 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,124 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:14,124 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:14,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:18:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:14,166 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:18:14,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:18:14,167 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:18:14,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:18:14,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:18:14,167 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-02-02 09:18:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:18:14,187 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-02-02 09:18:14,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:18:14,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-02-02 09:18:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:18:14,188 INFO L225 Difference]: With dead ends: 21 [2018-02-02 09:18:14,188 INFO L226 Difference]: Without dead ends: 19 [2018-02-02 09:18:14,188 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:18:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-02-02 09:18:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-02-02 09:18:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-02-02 09:18:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-02-02 09:18:14,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-02-02 09:18:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:18:14,191 INFO L432 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-02-02 09:18:14,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:18:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-02-02 09:18:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 09:18:14,192 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:18:14,192 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:18:14,192 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 09:18:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 113669371, now seen corresponding path program 1 times [2018-02-02 09:18:14,192 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:18:14,193 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:18:14,193 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:14,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:14,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:18:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:14,238 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:18:14,238 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:18:14,245 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:14,273 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:18:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:14,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:18:14,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-02-02 09:18:14,346 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:18:14,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:18:14,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:18:14,347 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2018-02-02 09:18:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:18:14,376 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-02-02 09:18:14,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:18:14,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-02 09:18:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:18:14,377 INFO L225 Difference]: With dead ends: 22 [2018-02-02 09:18:14,377 INFO L226 Difference]: Without dead ends: 20 [2018-02-02 09:18:14,377 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:18:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-02-02 09:18:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-02-02 09:18:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-02-02 09:18:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-02-02 09:18:14,380 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-02-02 09:18:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:18:14,380 INFO L432 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-02-02 09:18:14,380 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:18:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-02-02 09:18:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 09:18:14,381 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:18:14,381 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:18:14,381 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 09:18:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1384123300, now seen corresponding path program 2 times [2018-02-02 09:18:14,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:18:14,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:18:14,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:18:14,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:18:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:18:14,395 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:18:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:18:14,446 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:18:14,447 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:18:14,451 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:18:14,464 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:18:14,465 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:18:14,467 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:18:14,502 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 09:18:14,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-02-02 09:18:14,509 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 09:18:14,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 09:18:14,512 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-02 09:18:14,542 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#cstats~0.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#cstats~0.base| 0)) (= 0 (select |c_old(#valid)| |main_~#cstats~0.base|)))) is different from true [2018-02-02 09:18:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-02 09:18:14,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:18:14,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-02-02 09:18:14,568 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:18:14,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:18:14,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2018-02-02 09:18:14,569 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 10 states. [2018-02-02 09:18:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:18:14,706 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-02-02 09:18:14,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:18:14,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-02-02 09:18:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:18:14,707 INFO L225 Difference]: With dead ends: 22 [2018-02-02 09:18:14,707 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 09:18:14,707 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=149, Unknown=1, NotChecked=26, Total=240 [2018-02-02 09:18:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 09:18:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 09:18:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 09:18:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 09:18:14,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-02-02 09:18:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:18:14,709 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 09:18:14,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:18:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 09:18:14,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 09:18:14,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:18:14 BoogieIcfgContainer [2018-02-02 09:18:14,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:18:14,714 INFO L168 Benchmark]: Toolchain (without parser) took 1342.80 ms. Allocated memory was 402.7 MB in the beginning and 607.1 MB in the end (delta: 204.5 MB). Free memory was 358.0 MB in the beginning and 495.3 MB in the end (delta: -137.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 5.3 GB. [2018-02-02 09:18:14,715 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 402.7 MB. Free memory is still 366.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:18:14,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.03 ms. Allocated memory is still 402.7 MB. Free memory was 358.0 MB in the beginning and 350.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-02-02 09:18:14,715 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 402.7 MB. Free memory was 350.0 MB in the beginning and 348.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 09:18:14,715 INFO L168 Benchmark]: RCFGBuilder took 148.67 ms. Allocated memory is still 402.7 MB. Free memory was 348.6 MB in the beginning and 334.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:18:14,716 INFO L168 Benchmark]: TraceAbstraction took 1051.07 ms. Allocated memory was 402.7 MB in the beginning and 607.1 MB in the end (delta: 204.5 MB). Free memory was 334.1 MB in the beginning and 497.1 MB in the end (delta: -163.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 5.3 GB. [2018-02-02 09:18:14,717 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 402.7 MB. Free memory is still 366.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 118.03 ms. Allocated memory is still 402.7 MB. Free memory was 358.0 MB in the beginning and 350.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.43 ms. Allocated memory is still 402.7 MB. Free memory was 350.0 MB in the beginning and 348.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 148.67 ms. Allocated memory is still 402.7 MB. Free memory was 348.6 MB in the beginning and 334.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1051.07 ms. Allocated memory was 402.7 MB in the beginning and 607.1 MB in the end (delta: 204.5 MB). Free memory was 334.1 MB in the beginning and 497.1 MB in the end (delta: -163.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 3 error locations. SAFE Result, 1.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 29 SDslu, 128 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 9 QuantifiedInterpolants, 4553 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memsetNonZero3_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-18-14-723.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memsetNonZero3_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-18-14-723.csv Received shutdown request...